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font/coretext: do not assume capacity on arraylist append

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Now that we're padding the cells with blanks if we have shaped ligatures
we don't actually know the exact count based on the CoreText APIs, so we
should just dynamically add.
This commit is contained in:
Mitchell Hashimoto
2024-05-08 08:55:19 -07:00
parent f13a471e05
commit 18e5382909
1 changed files with 3 additions and 8 deletions
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11
src/font/shaper/coretext.zig
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@ -322,11 +322,6 @@ pub const Shaper = struct {
advances,
indices,
) |glyph, advance, index| {
try self.cell_buf.ensureUnusedCapacity(
self.alloc,
glyphs.len,
);
// Our cluster is also our cell X position. If the cluster changes
// then we need to reset our current cell offsets.
const cluster = state.codepoints.items[index].cluster;
@ -341,7 +336,7 @@ pub const Shaper = struct {
// If we have a gap between clusters then we need to
// add empty cells to the buffer.
for (cell_offset.cluster + 1..cluster) |x| {
self.cell_buf.appendAssumeCapacity(.{
try self.cell_buf.append(self.alloc, .{
.x = @intCast(x),
.glyph_index = null,
});
@ -350,7 +345,7 @@ pub const Shaper = struct {
cell_offset = .{ .cluster = cluster };
}
self.cell_buf.appendAssumeCapacity(.{
try self.cell_buf.append(self.alloc, .{
.x = @intCast(cluster),
.x_offset = @intFromFloat(@round(cell_offset.x)),
.y_offset = @intFromFloat(@round(cell_offset.y)),
@ -376,7 +371,7 @@ pub const Shaper = struct {
// We need to go back to the last matched cluster and add
// padding up to there.
for (last_cell.x + 1..last_cp.cluster + 1) |x| {
self.cell_buf.appendAssumeCapacity(.{
try self.cell_buf.append(self.alloc, .{
.x = @intCast(x),
.glyph_index = null,
});